<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>优化节点添加</title>
</head>
<body>
    <script>
        for(var i = 0; i < 100; i++){
            var oP = document.createElement('p')
            oP.innerHTML = i
            document.body.appendChild(oP)
        }

        const fragEle = document.createDocumentFragment()
        for(var i = 0; i < 100; i++){
            var oP = document.createElement('p')
            oP.innerHTML = i

            fragEle.appendChild(oP)
        }
        document.body.appendChild(fragEle)
        // Jsperf 查看运行速度
    </script>
</body>
</html>